(19)

(11)

EP 0 403 643 A1

(12)

(43) Date of publication: 27.12.1990 Bulletin 1990/52 (21) Application number: 90902060.0 (22) Date of filing: 10.01.1990

(51) International Patent Classification (IPC):  H02B 1/ 20( . ) H05K 1/ 02( . ) H02H 9/ 04( . ) H05K 9/ 00( . ) (86) International application number: PCT/US1990/000090 (87) International publication number: WO 1990/009049 (09.08.1990 Gazette 1990/19)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI LU NL SE (30) Priority: 10.01.1989 US 19890295379 (71) Applicant: L.E.A. DYNATECH Santa Fe Springs, CA 90670 (US)	(72) Inventors: ROZANSKI, Robert, D. Huntington Beach, CA 92646 (US) MEDLOCK, James, Roger, III West Covina, CA 91790 (US) LARSON, Stephen, F. La Habra Heights, CA 90631 (US) (74) Representative: Skone James, Robert Edmund  GILL JENNINGS & EVERY Broadgate House 7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)